Light fixture with rotatable light source

Abstract

A light fixture with rotatable light source includes a fixed lamp holder, a rotatable lamp holder, a light source assembly, a power source and a transmission mechanism; and the light of the light source assembly has strong and weak changes while rotating with the rotatable lamp holder within the circumferential range of the rotation centerline; the power source and the transmission mechanism are used to drive the rotatable lamp holder to rotate relative to the fixed lamp holder. The light fixture with rotatable light source drives the light source assembly to rotate through the rotatable lamp holder, the light intensity changes during the light source assembly rotates around the center line of rotation. The light fixture will produce a sparkling effect especially suitable for jewelry lighting, so that jewelry is shining at all times.

The invention claimed is: 
     
       1. A light fixture with rotatable light source, comprising:
 a fixed lamp holder ( 100 ), a rotatable lamp holder ( 200 ), a light source assembly ( 300 ), a power source ( 400 ), a transmission mechanism ( 500 ), and an anti-glare cover ( 600 ), 
 wherein 
 the rotatable lamp holder ( 200 ) has an inner protruding rim and a rotation centerline ( 101 ), 
 the rotatable lamp holder ( 200 ) rotates around the rotation centerline ( 101 ) and is arranged on the fixed lamp holder ( 100 ), 
 the light source assembly ( 300 ) is arranged on the rotatable lamp holder ( 200 ), and light of the light source assembly ( 300 ) has strong and weak changes while rotating with the rotatable lamp holder ( 200 ) within the circumferential range of the rotation centerline ( 101 ), 
 the power source ( 400 ) and the transmission mechanism ( 500 ) are used to drive the rotatable lamp holder ( 200 ) to rotate relative to the fixed lamp holder ( 100 ), 
 the anti-glare cover ( 600 ) is arranged on the rotatable lamp holder ( 200 ); 
 the rotatable lamp holder ( 200 ) has an inner hole ( 107 ) circumscribed by a circular wall and a bearing ( 800 ) is fitted inside the inner hole ( 107 ), a driven gear ( 502 ) of the transmission mechanism ( 500 ) is disposed on an exterior wall of the inner protruding rim of the rotatable lamp holder ( 200 ), and the driven gear ( 502 ) meshes with a driving gear ( 501 ) attached to an output end of the power source ( 400 ). 
 
     
     
       2. The light fixture with rotatable light source as claimed in  claim 1 , wherein the light source assembly ( 300 ) comprises a circuit board ( 301 ) arranged on the rotatable lamp holder ( 200 ) and a first light source ( 302 ) arranged on the front of the circuit board ( 301 ) and deviated from the rotation centerline ( 101 ). 
     
     
       3. The light fixture with rotatable light source as claimed in  claim 2 , wherein the light source assembly ( 300 ) further comprises a second light source ( 303 ) arranged on the front of the circuit board ( 301 ) and located at the rotation centerline ( 101 ). 
     
     
       4. The light fixture with rotatable light source as claimed in  claim 2 , wherein there are multiple first light sources ( 302 ), and the first light source ( 302 ) is arranged in at least one circle around the rotation centerline ( 101 ), wherein at least one first light source is provided in each circle. 
     
     
       5. The light fixture with rotatable light source as claimed in  claim 4 , wherein at least two first light sources ( 302 ) are provided in each circle, and the first light sources ( 302 ) in the same circle are evenly distributed around the rotation centerline ( 101 ). 
     
     
       6. The light fixture with rotatable light source as claimed in  claim 2 , wherein the first light source ( 302 ) comprises a first LED chip ( 3021 ) and a first optical element ( 3022 ) arranged in the light emitting direction of the first LED chip ( 3021 ). 
     
     
       7. The light fixture with rotatable light source as claimed in  claim 6 , wherein the first optical element ( 3022 ) is a collimating lens. 
     
     
       8. The light fixture with rotatable light source as claimed in  claim 6 , wherein the first optical elements ( 3022 ) are integrated on a mounting plate ( 3013 ). 
     
     
       9. The light fixture with rotatable light source as claimed in  claim 1 , wherein the anti-glare cover ( 600 ) is located in the light emitting direction of the light source assembly ( 300 ). 
     
     
       10. The light fixture with rotatable light source as claimed in  claim 9 , wherein the anti-glare cover ( 600 ) is a honeycomb anti-glare cover. 
     
     
       11. The light fixture with rotatable light source as claimed in  claim 10 , wherein the light source assembly ( 300 ) is provided with multiple light sources and arranged in a honeycomb type. 
     
     
       12. The light fixture with rotatable light source as claimed in  claim 11 , wherein each hole of the honeycomb anti-glare cover faces an individual light source. 
     
     
       13. The light fixture with rotatable light source as claimed in  claim 1 , wherein the power source ( 400 ) is a motor. 
     
     
       14. The light fixture with rotatable light source as claimed in  claim 1 , wherein the transmission mechanism ( 500 ) adopts the form of belt transmission, chain transmission or gear transmission. 
     
     
       15. The light fixture with rotatable light source as claimed in  claim 1 , wherein the light fixture further comprises a control circuit board ( 700 ) arranged on the fixed lamp holder ( 100 ) to supply power to the power source ( 400 ) and provide forward and reverse control signals. 
     
     
       16. The light fixture with rotatable light source as claimed in  claim 1 , wherein the fixed lamp holder ( 100 ) and the rotatable lamp holder ( 200 ) are provided with the bearing ( 800 ) at the rotating connection. 
     
     
       17. The light fixture with rotatable light source as claimed in  claim 1 , wherein the fixed lamp holder ( 100 ) and the rotatable lamp holder ( 200 ) are provided with a wire hole ( 102 ) at the rotating connection. 
     
     
       18. The light fixture with rotatable light source as claimed in  claim 1 , wherein the fixed lamp holder ( 100 ) comprises:
 bottom cover ( 103 ); 
 lamp tube ( 104 ), arranged on the bottom cover ( 103 ), and the inner cavity is used to accommodate the rotatable lamp holder ( 200 ), the light source assembly ( 300 ), the power source ( 400 ) and the transmission mechanism ( 500 ); 
 and power source mounting seat ( 105 ), arranged on the bottom cover ( 103 ) and located in the lamp tube ( 104 ). 
 
     
     
       19. The light fixture with rotatable light source as claimed in  claim 18 , wherein the power source mounting seat ( 105 ) is provided with a bearing seat ( 106 ) that is matched with the inner ring of the bearing ( 800 ), and the inner hole ( 107 ) of the rotatable lamp holder ( 200 ) is matched with the outer ring of the bearing ( 800 ). 
     
     
       20. A light fixture with rotatable light source, comprising:
 a fixed lamp holder ( 100 ), a rotatable lamp holder ( 200 ), a light source assembly ( 300 ), a power source ( 400 ), a transmission mechanism ( 500 ), and an anti-glare cover ( 600 ); 
 wherein the power source ( 400 ) is arranged on the fixed lamp holder ( 100 ), 
 the fixed lamp holder ( 100 ) has a rotation centerline ( 101 ), 
 the rotatable lamp holder ( 200 ) rotates around the rotation centerline ( 101 ) and is arranged on the fixed lamp holder ( 100 ), the rotatable lamp holder ( 200 ) having an inner protruding rim, 
 the light source assembly ( 300 ) is arranged on the rotatable lamp holder ( 200 ), and light of the light source assembly ( 300 ) has strong and weak changes while rotating with the rotatable lamp holder ( 200 ) within the circumferential range of the rotation centerline ( 101 ), 
 the power source ( 400 ) and the transmission mechanism ( 500 ) are used to drive the rotatable lamp holder ( 200 ) to rotate relative to the fixed lamp holder ( 100 ), and the transmission mechanism ( 500 ) further comprises:
 a driving gear ( 501 ), arranged on the fixed lamp holder ( 100 ) and meshing with the output end of the power source ( 400 ); 
 and a driven gear ( 502 ) disposed on an exterior wall of the inner protruding rim of the rotatable lamp holder ( 200 ) and meshing with the driving gear ( 501 ); and 
 
 the anti-glare cover ( 600 ) is arranged on the rotatable lamp holder ( 200 ).